Directional Valves

EP20-S38 — Piloted Poppet–Type Logic Element
   Selection guide - similar valves.
   PDF file of this page.
   STP file for EP20-S38.
   Request a quote.

EP20-S38 Valve

SYMBOL:
EP20-S38 Valve symbol

DESCRIPTION
A poppet-type, screw-in, cartridge-style, hydraulic directional element, with multifunction
potential when used with other directional, pressure, or flow control devices.

OPERATION
The EP20-S38 is a spring-biased poppet valve which will block 1 to 2 or 2 to 1 until pressure
at 1 or 2 exceeds the cumulative pressure at 3 and bias spring. With no pressure at 3, flow
will be allowed from 1 to 2 or 2 to 1 once the bias spring force is overcome with pressure at
1 or 2. When the element is in the closed state, the ratio of areas 1 and 2 is 1:1, and the ratio
of areas 1 or 2 to 3 is 1:2.

FEATURES
• Multiple function/application potential.
• Low pressure drop.
• Industry common cavity.

RATINGS
Max. Operating Pressure: Cartridge Only: Ports 1 & 2: 241 bar (3500 psi);
Flow: Up to 303 lpm (80 gpm)
Internal Leakage: 0.6 cc/minute (12 drops/minute) max. at 241 bar (3500 psi)
Operating Temperature: -40 to 100°C (-40 to 212°F) with Buna seals;
   -26 to 204°C (-15 to 400°F) with fluorocarbon seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC20-S3; See page 9.120.1_3w
Cavity Tool: CT20-S3xx; See page 8.600.1
Seal Kit: SK20-S3x-MM; See page 8.650.1

PERFORMANCE:

EP20-S38 Performance
  DIMENSIONS:
EP20-S38 Valve Dimensions

MATERIALS:

Cartridge: Weight: 0.82 kg 1.8 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces. Buna N
O-rings and polyester elastomer back-ups standard.

Ported Body: Weight: 1.65 kg (3.65 lb)
Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar
(3000 psi). Ductile iron bodies available; dimensions may differ.
See page 8.020.1_3w.
  ORDERING CHART:

EP20-S38 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP File for EP20-S38 Request a quote.